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June 30, 2015

Homework Help: physics

Posted by jenn on Wednesday, March 30, 2011 at 10:05pm.

A freight train has a mass of 1.5 107 kg.
If the locomotive can exert a constant pull
of 4.9105 N, how long does it take to increase
the speed of the train from rest to 74 km/h?
Answer in units of min.

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